Synthesis and characterization of single-crystal strontium hexaboride nanowires.
Catalyst-assisted growth of single-crystal strontium hexaboride (SrB6) nanowires was achieved by pyrolysis of diborane (B2H6) over SrO powders at 760-800 degrees C and 400 mTorr in a quartz tube furnace. Raman spectra demonstrate that the nanowires are SrB6, and transmission electron microscopy along with selected area diffraction indicate that the nanowires consist of single crystals with a preferred [001] growth direction. Electron energy loss data combined with the TEM images indicate that the nanowires consist of crystalline SrB 6 cores with a thin (1 to 2 nm) amorphous oxide shell. The nanowires have diameters of 10-50 nm and lengths of 1-10 microm.
Jash
Panchatapa
P
Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, USA.
Nicholls
Alan W
AW
Ruoff
Rodney S
RS
Trenary
Michael
M